﻿/*
 * Copyright (c) http://DesignBased.NET 
 * Author: http://t.163.com/Jeek 
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the 
 * Software  * without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the 
 * Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR
 * A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 
 * 
 */

using System;
using System.Collections.Generic;
using System.Text;
using T163.Open.Api.WP7.Model;

namespace T163.Open.Api.WP7
{
    internal static class StringExtension
    {
        internal static string OAuthPercentEncode(this string s)
        {
            string unreserved = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.~";
            StringBuilder result = new StringBuilder();
            byte[] data = Encoding.UTF8.GetBytes(s);
            foreach (byte b in data)
            {
                if (b < 0x80 && unreserved.IndexOf((char)b) != -1)
                    result.Append((char)b);
                else
                    result.Append('%' + String.Format("{0:X2}", (int)b));
            }
            return result.ToString();
        }

        internal static string UrlEncode(this string s)
        {
            StringBuilder rt = new StringBuilder();
            foreach (byte i in Encoding.UTF8.GetBytes(s))
                if (i == 0x20)
                {
                    rt.Append('+');
                }
                // 0 - 9, A - Z, a - z
                else if (i >= 0x30 && i <= 0x39 || i >= 0x41 && i <= 0x5a || i >= 0x61 && i <= 0x7a)
                {
                    rt.Append((char)i);
                }
                else
                {
                    rt.Append("%" + i.ToString("X2"));
                }
            return rt.ToString();

        }

        internal static List<Parameter> ParseParameters(this string s)
        {
            List<Parameter> result = new List<Parameter>();
            string[] keyAndValues = s.Split('&');

            foreach (string keyAndValue in keyAndValues)
            {
                result.Add(
                    new Parameter() { Key = keyAndValue.Split('=')[0], Value = keyAndValue.Split('=')[1] }
                    );
            }

            return result;
        }
    }
}
